I disagree that operating a fax line is cheap. Up until the mid 2000s, we still had a fax machine in our office. By that time, because our fax number was liste

I disagree that operating a fax line is cheap. Up until the mid 2000s, we still had a fax machine in our office. By that time, because our fax number was listed, we received about 10 spam messages a day – some of them were complete product catalogs that took 30-40 pages. It cost us hundreds of dollars a month in toner and paper. In 2008, we switched to fax software, which cut costs dramatically, but we still had to pay for the dedicated fax line. We shut it down in 2011, because no relevant faxes had come in for over a year.